Safety scaffold-hanging- apparatus



1. unovncn. SAFETY SCAFFOLD HANGING APPARATUS.

APPLICATION FILED SEPT. 30. 1918- 1,340,191, I 1 mm ma 18,1920.

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J7z0e reforciliiep/e @UG'QA/ A JOSEPH UDOVIGI-I, or DULUTH, MINnEsoTA- SAFETY SCAFFOLD-HANGINGY APPARATUS.

Specification of Letters Patent.

Patented May is, 1920.

Application filed September 30, 1918. Serial No. 256,276.

To all whom it may concern:

Be it known that I, Josnrrr UDOVICH, a citizen of the United States, residing at Duluth, in the county of St. Louis and State of Minnesota, have invented certain new and useful Improvements in Safety Scaffold-Hanging Apparatus, of which the following is a specification.

My invention relates to safety scaffold hanging apparatus wherein a maximum amount of strength and safety is provided. and the raising and lowering of the scaffold is at all times under the control of the men on the scaffold with absolute safety to themselves, and where one set of cables is pro vided for sustaining the weight of the scaffold, thus securing a maximum of safety, while another set acts as a safety arrangement.

Another object of the invention is the provision of a scaffold hanging apparatus comprising primary suspension means and a secondary suspension apparatus which acts as safety means if the ropes of the primary suspension apparatus should break, or while the scaffold is in position should be disturbed or loosened.

Another and further object of the invention is to provide a scaffold hanging apparatus which can be safely raised and lowered at will by the men on the scaffold and then secured permanently in position by the men on the scaffold. Heretofore, for instance, in the relining ofblast furnaces, the control cables are operated many times by means on the ground outside of the blast furnace and out of sight as well as out of control of the workmen on the scaffold and are likely to be disturbed or moved, thus releasing the scaffold and causing it to fall. It is the common practice as will be understood in the handling of scaffolds of this nature to have an ordinary block and tackle arrangement of ropes or cables secured to the top of the wall with the scaffold at the bottom of the block and tackle. This arrangement while putting the scaffold under the control of the men thereon does not afford the requisite amount of safety necessary for many operations. My invention affords means whereby the scaffold is not only operated in the manner described above but is also secured to an additional hanging device, thus at all times insuring a maximum of safety.

My invention will be further and better understood by reference to the accompanying drawings in Which- Figure 1 is a view in elevation showing my improved scaffold hanging apparatus;

Fig. 2 is a view-partially in section and partially in elevation on lines 2-2 of Fig. 1; and I Fig. 3 is a perspective view showing the apparatus in position secured to the wall of a building.

Referring now specifically to the drawings, a pair of supporting cables or ropes 10 and 11 are shown, each of the supporting cables having a plurality of loops 12, 12, spliced therein and spaced apart from each other a short distance. Suitable loops 13, 13, at the upper ends of each of'the cables 10 and 11 and formed integrally therewith afford. means for'attachment of the cables 10 and 11 to hooks 14, 15, for securing the apparatus to the top of a wall or cornice of the building. I p

A scaffold consisting of platform shown as members 16, 16, T shaped members in Fig. 2 is provided which members are se cured at each of their ends to a pair of end members 18 and 19, to which in turnare secured supporting members 20, 20, at each of the ends of the members 18 and 19, the members 20 surrounding the members 18 and 19 and having projections 21, 21, on their tops and to which a pair of arms 17, 17 is secured by means of bolts 22, 22 which pass through apertures inthe projections 21, 21, the arms 17 having eyes 23, 23, formed at their upper ends. Secured to the hooks 14 and 15 respectively by any suitable connection is a pair of tackle blocks 24 and 25, through which ropes 24 and 25 pass and through a pair of lower tackle blocks 24 and 25 which are secured to the eyes 23, 23 of the members 17, 17, thus providing means for raising and lowering the scaffold. Secured to the eyes 23, 23 of the supporting members 17, 17 is a pair of safety cables 26 and 27, each of the said safety'cables 26 and 27 having hooks 28, 28 at each of their endsand adaptedto hook into the loops 12, 12 and into the eyes 23, 23 of the members 17 The length of the safety cables 26 and 27 is such that a man standing on the scaffold can reach the upper hook and change the hooks as may be de sired to any of the loops 12, 12, formed in the members 10 and 11.

The operation of the device will be read- Cir ily understood in that the men standing upon the scaffold can grasp the cables 2 1 and 25 and thus raise and lower the scaffold at will; in case the scaffold is to be raised they simply raise it a suitable distance when the hooks at the upper ends of the members 26 and 27 are simply disengaged from the loops to which they are secured and hooked into higher loops, and the ropes 24 and 25 allowed to slacken when the weight of the scaffold will be sustained by the safety cables 26 and 27. Or the cables 24E and 25 may be secured in any manner desired and the safety cables 26 and 2? simply allowed to hang loosely but without any considerable amount of slack so that in case the cables 24 and 25 should break or be loosened or disturbed in any manner the members 26 and 27 will catch and sustain the weight of the scaffold. In case it is desired to lower the scafiold the hooks at the upper ends of the safety cables 26 and 27 are disengaged from the loops and secured to a pair of lower loops and the scaffold lowered to the position desired. It will be thus understood that whether the scaffold is stationary or is being raised or lowered the safety cables 26 and 27 will always be in position to act as emergency or safety support means except for the short interval when the hooks are being changed from one of the loops to another.

While I have described precisely the details of construction, I do not wish to be understood as limiting myself thereto, as I contemplate changes in form and the proportion of parts and the substitution of equivalents as circumstances may suggest or render expedient without departing from the spirit or scope of my invention.

I claim:

1. In combination, a scafiold platform, a pair of vertically suspended cables having spaced loops throughout their lengths, attaching means for securing the vertically suspended cables to the wall of a building, safety cables adapted to connect said scaffold platform with the said spaced loops, and means for Varying the height of the scaffold platform.

2. In combination, a scaffold platform, a pair of vertically suspended cables having integrally formed spaced loops throughout their lengths, attaching means for securing the vertically suspended cables to the wall of a building, safety cables adapted to connect said scafiold platform with the said spaced loops, and a block and tackle for raising and lowering the scaffold platform.

3. In combination, a scaffold platform, a pair of vertically suspended cables having integrally formed spaced loops throughout their length, a pair of hooks to which said cables are secured for securing the said cables to the wall of a building, safety cables adapted to connect said scaffold platform with the said loops, and a block and tackle secured to said hooks for raising and lowering the scaffold platform.

4. In combination, a scaffold, a pair of vertically suspended cables having loops at their upper ends and integrally formed spaced loops throughout their lengths, attaching means for securing the vertically suspended cables to the wall of a building, safety cables adapted to connect said scaffold with the said loops and means for raising and lowering the scaffold platform.

5. In combination, a scaffold, a pair of vertically suspended cables having loops at their upper ends and integrally formed spaced loops throughout their lengths, a pair of hooks secured to the vertically suspended cables, safety cables adapted to connect the said scaffold with said spaced loops, and means for raising and lowering the scaffold platform.

Signed at Duluth, Minnesota, this 13th day of September, 1918.

- JOSEPH UDOVICH. 

